treating the diplomats of iran. >> reporter: president obama used his u.n. speech to warn an >> let me be clear america wants to resolve this problem through diplomacy. we believe there is time to do that but that time is not unlimited. >> reporter: more on what iran's president is saying on tv this morning. reporting live alison burns. >>> time now 5:14. back here at home you know college campuses around the nation are getting bomb threats. the it last one happened yesterday at uc beckly. at 9:00 a.m. police responded to a call there was a bomb on campus. all day search turned up nothing suspicious in pat past couple of weeks including schools in ohio, texas, and tennessee have also received fake bomb threats. >>> firefighters continue to battle that fire near campo in san diego county. the flames burned nearly 3,000 acres since sunday and destroyed at least 20 homes. the evacuation order was lifted in the area yesterday. one elderly man died in that fire after deciding not to evacuate. >>> in just hours a concord teenager is expected to enter a guilty plea